I mean like, a worldwide union? What would be the pros and cons of having a single currency in every world nation?

Firstly, by having every country in the world use the same currency we would have to have achieved a new world order. The entire planet would have to become one giant country. I don't see that happening peacefully... or ever. At least not any time soon. And the only way I could ever see that happening is through war. A sort of "war to end all wars", most likely.

or you could all unanimously elect me ruler of planet earth....

Like that'll ever happen.

Firstly, by having every country in the world use the same currency we would have to have achieved a new world order. The entire planet would have to become one giant country. I don't see that happening peacefully... or ever. At least not any time soon. And the only way I could ever see that happening is through war. A sort of "war to end all wars", most likely.
No, that isn't true. Every country still has its own culture, and language. I'm sure Napalm is going to come in here and tell me before too long that what I'm suggesting is impossible and for some cause or the other absurd.

Pfft, from the looks eventually every major country on earth is gonna speak English as its first language... and have you noticed how everyone's been getting (slowly, but surely) more and more Western?

Well most of Europe has transferred to the Euro, and they are all seperate nations. However, I like dollars. I don't wanna change, and I think most Americans would agree.

metric system ftw!!!!

The dollar, euro, and Canadian currencies (loonies?) are all good, I do not like the yen though. Having to use 100 yen to buy a gum ball would be annoying.

the fat that they have 100 yen coins that are the same as dollar coins etc doesn't change that?

its not like every person in japan has a wallet the size of a small car to keep their coins in....

At this rate Europe's going to control all the world markets. They're already becoming one big united superpower, but they're still keeping all their languages and more or less cultures.

I mean like, a worldwide union? What would be the pros and cons of having a single currency in every world nation?Could never happen in the current state of matters, for economic reasons. If all the world would have one form of currency, it would be quite an ordeal in some nations. Obviously, the country to organize the currency would be a powerful nation, not neccisarily us, as this could happen 5000 years from now. Say, 10 units buys you a loaf of bread, the average wage of say an etheopian laborer in a salt mine, is 2 units a day. That means he could only buy a loaf of bread every 5 days. Kind of a meager ammount for someone to survive off of, even if you had no children.

The system would work if the range of money was great enough, but that would be incredibly inefficient. You wouldn't want to carry 10,000 micro-units in your backpack that buy a loaf of bread in the united states, or 200 in etheopia.

Not to mention the many cultural differences that stand in the way of a unified world. I can only imagine this happening in the event of a global crisis inolving another race from another planet. essencially negotiations with aliens.

It works in places like the EU, just because their enonomic situations are relatively similar.

Good Lord Napalm... change you signature.

Could never happen in the current state of matters, for economic reasons. If all the world would have one form of currency, it would be quite an ordeal in some nations. Obviously, the country to organize the currency would be a powerful nation, not neccisarily us, as this could happen 5000 years from now. Say, 10 units buys you a loaf of bread, the average wage of say an etheopian laborer in a salt mine, is 2 units a day. That means he could only buy a loaf of bread every 5 days. Kind of a meager ammount for someone to survive off of, even if you had no children.
The system would work if the range of money was great enough, but that would be incredibly inefficient. You wouldn't want to carry 10,000 micro-units in your backpack that buy a loaf of bread in the united states, or 200 in etheopia.
Not to mention the many cultural differences that stand in the way of a unified world. I can only imagine this happening in the event of a global crisis inolving another race from another planet. essencially negotiations with aliens.
It works in places like the EU, just because their enonomic situations are relatively similar.
Yes, such is probably true. I mean, it isn't only that, but some countries just don't have enough natural resources or economic leverage to keep up with superpowers that have tons of things to trade and export. I suppose I was thinking more of developed nations, whose monetary values are already similar. Really, it would be just like the European Union expanding to include like, the US, Japan, Singapore, certain nations in the Middle East, and other developed nations around the world. I think that having a common market between the more advanced nations of the world would be highly beneficial, but there would be a number of huge hurtles to overcome.

back on topic please.....

Okay. What are your opinions on the advanced nations of the world moving towards forming a single common market?

In the world's current state, I doubt it'll ever happen.

What's that supposed to mean? The world isn't in a particularly rough patch, economic-wise. I mean, it could happen.

What's that supposed to mean? The world isn't in a particularly rough patch, economic-wise. I mean, it could happen.What about the countries who's currency holds religious significance?
What about the countries that have nowhere near the capacity to handle a currency change?
What about the countries that some people don't recognize as countries?
What about counterfeiting? Wouldn't one standard currency make it easier for counterfeiters?

As mentioned before, what about economics? Obviously the value of currency changes from country to country. Should you null the difference? Spripping the wealthy of their earned wealth? giving it to the poor? or do you make an insanely high-denominational currency system with 100's of denominations, if not 1000's?

What about the countries who don't keep tabs on their economic situaiton? How do you know how much money to give them?

How would you trust the currency? the only reason we trust ours, is because we control the people who use it. What if you're unit is supposed to be worth the same as some richer country? or poorer country? Doubts arise about the stability of the currency. Inflation occurs. Destabilising he currency, perhaps throwing the world into utter chaos, since wveryone uses one currency.

All these factors and many more that I haven't even thought about need to be taken into consideration. You make it sound like the UN just takes a vote, and pop! here comes a global currency!

No.